This is a 20,000 rpm Digital tachometer that will accurately read the engines rpm’s. It also has the maximum rpm recall feature, so you can see what the max rpm was after the race. This can certainly save your motor. These wire into a coil primary wire, so they will work on most any 2 or 4-stroke engine. They are also backlit for easy nighttime viewing.
Kart, ATV and dirt bike guys: There is also a version available that is self powered by a watch battery.. (LCD dusplay-not backlit) same price.. email for more details.
*also listed is a matching water or oil temperature gauge.